The story told by Kate and Lauren, two sisters, polar opposites, envying each other’s lives. Kate is successful reporter, climbing her career ladder faster, having a lovely husband Matt but she wants to have a baby. Lauren is married, with lovely children, exhausted to turn into a stay at home mum and dealing with mood-swings, mental abuse of her husband Simon. The one thing that bugged me was how the sisters found each other through a DNA website. I really didn't understand how that happened, and it just seemed so unlikely to me that that would ever happen. This held my attention and I was never bored so I was able to finish it in one sitting. There is a build up of suspense and an ending that was fantastic because I never imagined the outcome while reading.